
nCTEQ15WZ+SIH results:
Grids:
 nCTEQ15WZ+SIH bound proton grids:
 Full PDF uncertainty sets: here (93 Mb)
 Mathematica ManeParse Testing Code for nCTEQ15WZSIH: here (4.3 Mb)
 nCTEQ15WZ+SIH_FullNuc full nucleus grids (Z f_{p} + N f_{n})/A
 Full PDF uncertainty sets: here (93 Mb)
If you use any of the grids provided here, please cite
 nCTEQ15WZ+SIH: "Impact of inclusive hadron production
data on nuclear gluon PDFs"
nCTEQ Collaboration: P. Duwentaster, L. A. Husova, T. Jezo, M.
Klasen, K. Kovarik, A. Kusina, K. F. Muzakka, F. I. Olness, I.
Schienbein, J. Y. Yu
arXiv:2105.09873
A precise knowledge of nuclear parton distribution functions (nPDFs) is 
among other things  important for the unambiguous interpretation of hard
process data taken in pA and AA collisions at the Relativistic Heavy Ion
Collider (RHIC) and the Large Hadron Collider (LHC). The available fixed
target data for deep inelastic scattering (DIS) and DrellYan (DY) lepton
pair production mainly constrain the light quark distributions. It is hence
crucial to include more and more collider data in global analyses of nPDFs
in order to better pin down the different parton flavors, in particular the
gluon distribution at small x. To help constrain the nuclear gluon PDF, we
extend the nCTEQ15 analysis by including single inclusive hadron (SIH)
production data from RHIC (PHENIX and STAR) and LHC (ALICE). In addition to
the DIS, DY and SIH data sets, we will also include LHC W/Z production data.
As the SIH calculation is dependent on hadronic fragmentation functions
(FFs), we use a variety of FFs available in the literature to properly
estimate this source of uncertainty. We study the impact of these data on
the PDFs, and compare with both the nCTEQ15 and nCTEQ15WZ sets. The
calculations are performed using a new implementation of the nCTEQ code
(nCTEQ++) including a modified version of INCNLO which allows faster
calculations using precomputed grids. The extension of the nCTEQ15 analysis
to include the SIH data represents an important step toward the next
generation of PDFs.
Fractional Contributions
nCTEQ PDFs
PDF Comparison
for comments or requests contact K.Kovarik karol.kovarik@unimuenster.de
F.Olness olness@smu.edu
